Alert archive / Tennessee / Roane County
Weather alerts in Roane County, Tennessee, 2023
158 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Roane County and its neighbors
Each county as a circle sized by its count in 2023. Tap one for its archive.
- Alerts
- 158
- Warnings
- 63
- Watches
- 18
- Advisories
- 34
- Busiest month
- June33 alerts
- Busiest day
- August 12, 202310 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 2 tornado warnings covering Roane County in 2023 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.
Roane County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 1 | 0% | |
| Severe thunderstorm warnings | 45 | 43 | 4% | 9 | 67% | 20 min |
| Flash flood warnings | 4 | 3 | 25% | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Morristown, TN: tornado warnings | 29 | 4 | 86% | 10 | 60% | 11 min |
| NWS Morristown, TN: severe thunderstorm warnings | 282 | 246 | 13% | 385 | 89% | 22 min |
| NWS Morristown, TN: flash flood warnings | 45 | 25 | 44% | 48 | 79% | 51 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
The alerts
Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 3, 2:21 PM EST | Special Weather Statement | MRX | 24 min |
| Jan 3, 2:41 PM EST | Severe Thunderstorm Warning | MRX | 34 min |
| Jan 12, 11:45 AM EST | Special Weather Statement | MRX | 45 min |
| Jan 17, 6:48 PM EST | Dense Fog Advisory | MRX | 16 hr |
| Jan 18, 4:10 AM EST | Wind Advisory | MRX | 39 hr |
| Jan 23, 3:38 PM EST | Wind Advisory | MRX | 51 hr |
| Jan 30, 10:24 PM EST | Dense Fog Advisory | MRX | 12 hr |
| Feb 8, 3:32 AM EST | Wind Advisory | MRX | 39 hr |
| Feb 17, 1:35 AM EST | Areal Flood Advisory | MRX | 6 hr |
| Feb 17, 7:20 AM EST | River Flood Warning | MRX | 14 hr |
| Feb 26, 3:26 AM EST | Wind Advisory | MRX | 52 hr |
| Mar 1, 11:42 PM EST | Areal Flood Advisory | MRX | 80 min |
| Mar 2, 1:02 AM EST | Flash Flood Warning | MRX | 3 hr |
| Mar 2, 3:35 AM EST | High Wind Watch | MRX | 12 hr |
| Mar 2, 3:34 PM EST | High Wind Warning | MRX | 35 hr |
| Mar 3, 11:34 AM EST | Tornado Watch | SPC | 5 hr |
| Mar 3, 2:23 PM EST | Severe Thunderstorm Warning | MRX | 52 min |
| Mar 3, 2:58 PM EST | Severe Thunderstorm Warning | MRX | 47 min |
| Mar 12, 3:20 PM EDT | Freeze Watch | MRX | 12 hr |
| Mar 13, 3:09 AM EDT | Freeze Warning | MRX | 34 hr |
| Mar 14, 3:29 AM EDT | Freeze Warning | MRX | 32 hr |
| Mar 15, 3:44 AM EDT | Freeze Warning | MRX | 30 hr |
| Mar 17, 3:26 AM EDT | Freeze Watch | MRX | 7 hr |
| Mar 17, 10:10 AM EDT | Freeze Warning | MRX | 23 hr |
| Mar 18, 2:59 AM EDT | Freeze Warning | MRX | 34 hr |
| Mar 18, 3:33 PM EDT | Freeze Warning | MRX | 43 hr |
| Mar 19, 3:30 PM EDT | Freeze Watch | MRX | 12 hr |
| Mar 20, 3:09 AM EDT | Freeze Warning | MRX | 30 hr |
| Mar 24, 3:54 AM EDT | Wind Advisory | MRX | 40 hr |
| Mar 25, 1:03 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 25, 2:11 AM EDT | Tornado Warning | MRX | 27 min |
| Mar 25, 2:35 AM EDT | Severe Thunderstorm Warning | MRX | 55 min |
| Mar 25, 2:45 AM EDT | Severe Thunderstorm Warning | MRX | 45 min |
| Mar 25, 2:54 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 25, 3:03 AM EDT | Severe Thunderstorm Warning | MRX | 42 min |
| Mar 25, 5:49 AM EDT | Wind Advisory | MRX | 14 hr |
| Mar 28, 2:49 PM EDT | Frost Advisory | MRX | 18 hr |
| Mar 29, 3:09 PM EDT | Frost Advisory | MRX | 18 hr |
| Mar 31, 3:05 AM EDT | Wind Advisory | MRX | 41 hr |
| Apr 1, 2:49 AM EDT | Tornado Watch | SPC | 4 hr |
| Apr 1, 4:03 AM EDT | Severe Thunderstorm Warning | MRX | 25 min |
| Apr 1, 4:09 AM EDT | Severe Thunderstorm Warning | MRX | 36 min |
| Apr 1, 4:27 AM EDT | Severe Thunderstorm Warning | MRX | 33 min |
| Apr 1, 4:35 AM EDT | Tornado Warning | MRX | 25 min |
| Apr 1, 4:46 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Apr 19, 3:39 PM EDT | Fire Weather Watch | MRX | 13 hr |
| Apr 20, 4:37 AM EDT | Red Flag Warning | MRX | 15 hr |
| Apr 23, 3:00 AM EDT | Frost Advisory | MRX | 30 hr |
| Apr 24, 11:59 AM EDT | Frost Advisory | MRX | 21 hr |
| May 7, 5:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 9, 5:23 AM EDT | Special Weather Statement | MRX | 37 min |
| May 9, 5:39 AM EDT | Severe Thunderstorm Warning | MRX | 34 min |
| May 14, 1:30 PM EDT | Special Weather Statement | MRX | 45 min |
| May 14, 1:45 PM EDT | Special Weather Statement | MRX | 45 min |
| May 15, 1:01 PM EDT | Special Weather Statement | MRX | 44 min |
| May 16, 12:30 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 16, 4:05 PM EDT | Severe Thunderstorm Warning | MRX | 40 min |
| May 16, 6:30 PM EDT | Severe Thunderstorm Warning | MRX | 45 min |
| Jun 4, 6:46 PM EDT | Severe Thunderstorm Warning | MRX | 44 min |
| Jun 4, 7:26 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jun 5, 1:52 PM EDT | Special Weather Statement | MRX | 53 min |
| Jun 5, 2:44 PM EDT | Severe Thunderstorm Warning | MRX | 46 min |
| Jun 5, 2:49 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 5, 3:23 PM EDT | Severe Thunderstorm Warning | MRX | 52 min |
| Jun 5, 3:28 PM EDT | Severe Thunderstorm Warning | MRX | 47 min |
| Jun 11, 4:34 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 11, 6:34 PM EDT | Severe Thunderstorm Warning | MRX | 56 min |
| Jun 11, 6:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 11, 7:26 PM EDT | Severe Thunderstorm Warning | MRX | 64 min |
| Jun 11, 8:07 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jun 11, 8:13 PM EDT | Severe Thunderstorm Warning | MRX | 47 min |
| Jun 11, 9:10 PM EDT | Severe Thunderstorm Warning | MRX | 51 min |
| Jun 11, 9:47 PM EDT | Severe Thunderstorm Warning | MRX | 43 min |
| Jun 25, 11:30 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 25, 1:03 PM EDT | Special Weather Statement | MRX | 42 min |
| Jun 25, 1:21 PM EDT | Severe Thunderstorm Warning | MRX | 39 min |
| Jun 25, 1:33 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 25, 1:47 PM EDT | Severe Thunderstorm Warning | MRX | 43 min |
| Jun 25, 1:54 PM EDT | Severe Thunderstorm Warning | MRX | 51 min |
| Jun 25, 2:12 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 25, 2:13 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jun 25, 2:20 PM EDT | Severe Thunderstorm Warning | MRX | 40 min |
| Jun 25, 9:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 25, 10:21 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 26, 1:45 AM EDT | Severe Thunderstorm Warning | MRX | 45 min |
| Jun 26, 1:54 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 26, 3:50 AM EDT | Special Weather Statement | MRX | 40 min |
| Jun 26, 5:46 AM EDT | Special Weather Statement | MRX | 29 min |
| Jun 30, 7:07 AM EDT | Special Weather Statement | MRX | 53 min |
| Jun 30, 7:54 AM EDT | Special Weather Statement | MRX | 51 min |
| Jun 30, 9:42 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jun 30, 10:33 PM EDT | River Flood Advisory | MRX | 18 hr |
| Jul 1, 5:22 PM EDT | Special Weather Statement | MRX | 38 min |
| Jul 2, 11:16 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 2, 1:14 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 5, 6:39 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 6, 1:57 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 18, 6:46 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 20, 3:49 AM EDT | Flood Watch | MRX | 16 hr |
| Jul 20, 8:39 AM EDT | Special Weather Statement | MRX | 51 min |
| Jul 20, 8:47 AM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 20, 9:40 AM EDT | Areal Flood Advisory | MRX | 4 hr |
| Jul 20, 11:31 AM EDT | Flash Flood Warning | MRX | 4 hr |
| Jul 20, 1:15 PM EDT | Severe Thunderstorm Warning | MRX | 25 min |
| Jul 20, 1:39 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 20, 4:34 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 20, 4:44 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 25, 2:40 PM EDT | Special Weather Statement | MRX | 50 min |
| Jul 25, 3:21 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 25, 3:22 PM EDT | Severe Thunderstorm Warning | MRX | 33 min |
| Jul 29, 2:37 PM EDT | Special Weather Statement | MRX | 53 min |
| Jul 29, 2:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 29, 2:53 PM EDT | Severe Thunderstorm Warning | MRX | 52 min |
| Jul 29, 3:35 PM EDT | Severe Thunderstorm Warning | MRX | 55 min |
| Jul 29, 5:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 29, 6:42 PM EDT | Special Weather Statement | MRX | 48 min |
| Jul 29, 7:06 PM EDT | Severe Thunderstorm Warning | MRX | 54 min |
| Aug 3, 3:02 PM EDT | Areal Flood Advisory | MRX | 118 min |
| Aug 7, 11:17 AM EDT | Tornado Watch | SPC | 7 hr |
| Aug 7, 12:42 PM EDT | Special Weather Statement | MRX | 33 min |
| Aug 7, 1:08 PM EDT | Severe Thunderstorm Warning | MRX | 52 min |
| Aug 7, 1:20 PM EDT | Severe Thunderstorm Warning | MRX | 40 min |
| Aug 7, 1:35 PM EDT | Severe Thunderstorm Warning | MRX | 55 min |
| Aug 7, 1:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Aug 7, 1:49 PM EDT | Severe Thunderstorm Warning | MRX | 41 min |
| Aug 7, 2:02 PM EDT | Severe Thunderstorm Warning | MRX | 58 min |
| Aug 7, 2:25 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Aug 10, 4:54 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 10, 5:15 AM EDT | Flash Flood Warning | MRX | 4 hr |
| Aug 10, 5:38 AM EDT | Flash Flood Warning | MRX | 4 hr |
| Aug 10, 5:48 AM EDT | Areal Flood Advisory | MRX | 4 hr |
| Aug 12, 11:50 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 12, 1:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 2:24 PM EDT | Special Weather Statement | MRX | 51 min |
| Aug 12, 2:26 PM EDT | Severe Thunderstorm Warning | MRX | 49 min |
| Aug 12, 2:29 PM EDT | Severe Thunderstorm Warning | MRX | 46 min |
| Aug 12, 2:48 PM EDT | Severe Thunderstorm Warning | MRX | 42 min |
| Aug 12, 2:58 PM EDT | Severe Thunderstorm Warning | MRX | 47 min |
| Aug 12, 3:08 PM EDT | Severe Thunderstorm Warning | MRX | 41 min |
| Aug 12, 3:11 PM EDT | Severe Thunderstorm Warning | MRX | 39 min |
| Aug 12, 3:26 PM EDT | Severe Thunderstorm Warning | MRX | 49 min |
| Aug 14, 6:43 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 8:33 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 14, 10:46 PM EDT | Severe Thunderstorm Warning | MRX | 44 min |
| Aug 15, 12:01 AM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 24, 1:08 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 25, 3:31 AM EDT | Heat Advisory | MRX | 16 hr |
| Aug 27, 3:55 PM EDT | Special Weather Statement | MRX | 50 min |
| Oct 30, 3:42 AM EDT | Freeze Watch | MRX | 24 hr |
| Oct 31, 3:37 AM EDT | Freeze Warning | MRX | 30 hr |
| Nov 1, 4:09 AM EDT | Freeze Warning | MRX | 29 hr |
| Dec 2, 3:22 AM EST | Dense Fog Advisory | MRX | 8 hr |
| Dec 9, 7:39 PM EST | Mesoscale Discussion | SPC | 96 min |
| Dec 9, 9:53 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Dec 9, 11:07 PM EST | Special Weather Statement | MRX | 38 min |
| Dec 9, 11:11 PM EST | Areal Flood Advisory | MRX | 3 hr |
| Dec 9, 11:22 PM EST | Severe Thunderstorm Warning | MRX | 38 min |
| Dec 9, 11:46 PM EST | Areal Flood Advisory | MRX | 2 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 45 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 22 |
| Special Weather Statement | 21 |
| Flooding | |
| Flash Flood Warning | 4 |
| River Flood Warning | 1 |
| Flood Watch | 1 |
| Areal Flood Advisory | 18 |
| River Flood Advisory | 1 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 9 |
| Freeze Watch | 4 |
| Frost Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 7 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.